Vehicle lock



April 13, 1926.

L.. TREMBLAY VEHICLE LOCK Filed April 14, 1924 Patented pr. A13, 1926.

UNITED STATES LIONEL TREMBLAY. OF MONTREAL, QUEBEC, CANADA. l

VEHICLE LOCK.

Application filed April 14, 1924. Serial No. 706,446.A

To all whom t may conce/m.'

Be it known that 1, LIONEL TREMBLAY, a subject of the King of Great Britain, and residing at the city of Montreal, in the Province of Quebec, in the Dominion of Canada, have invented a new and useful Vehicle Lock, of which the following is the specification.

The invention relates to a vehicle lock as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel features of construction pointed out broadly and specifically in thc claim for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to eliminate the theft of motor cars; to insure safety in the locking in so far as it is possible to do that in respect to the operating mechanism of motor cars; to facilitate the locking and unlocking of the part held; to raccomplish the purposes of this invention at a minimum expense and with the simplest of mechanisms; and generally to provide an eiiicient and durable device for locking cars.

In the drawings Figure 1 is a sectional view of the parts to this invention, showing the application thereof to a transmission of the Ford type.

Figure 2 is an enlarged sectional view of the locking device.

Figure 3 is a plan view of the transmission case cover and locking device.

Figure 4 is a perspectve detail of locking bolt and cylinder lock.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawings, the cover plate 1 for the transmission case 2 is attached to the latter by the end screws 3 'and 4 and centre screws 5 and is made with the boss 6 forming the plate recess 7 below the centre screws 5.

The inner side is also bossed at 8 and the latter is pierced at 9 in alignment with a corresponding hole through the cover plate 1. The boss 8 is also bored through from one end to the pin hole 9 to form a hole for the locking bolt 10, said locking bolt 1Q being recessed for the spring 11, which is stopped at its outer end by the rigid pin 12.

It will be thus seen that the tendency of the bolt 10 is to shoot inwards and this is stopped by the main locking pin 13, which is formed with the laterally extending head 14, andthe bolt recess 15 intermediate of'itsv length. i

The stop 16 at the lower end of the main pin 13 is formed of a headed pin adapted to engage the boss surface on the outward movement of said main pin driven bythe spiral spring 18 inserted in a recess in the under side of the head 14.

The spring 18 at its inner end abuts the screw cover plate 19, which is inserted in the recess 7 and rests on the heads of the screw 5 to which it is held by said spring 18.

The lock casing 2O is preferably integral with the cover plate 1 and contains the lock cylinder 21 with the pin tumblers 22 customary in that type of lock and these Qombinations are changed to suit and a key 23 iitted to the lock. The bar 24 is attached to the cylinder 21, and extends through the passage 25 leading from the lower end of the casing interior to the locking bolt recess 9 and is oti'set at the end 26, this offset entering the corresponding slotted locking bolt 10, so that the latter may be unlocked from the main pin by turning the key.

It will be noticed that in the preferable form of the invention the cover plate for the transmission case is cast specially so as to include the necessary thicknesses for pin passage and lock parts, the latter being inserted by drilling the thickened wall above and below the plate portion. v

In the operation of this invention the main pin forming the vehicle lock is normally maintained at its outer position and is pressed downwardly by the foot pressing on the head of the pin thus compressng the spring 18.

This action slides the pin inwardly until the bolt recessl is in alignment with the locking bolt 10, when the latter springs into said recess and holds the main pin 13 to its inner position against the outward pressure of the spring 18.

The inwardly extending pin 13 extends over the edge of the brake drum 27 of a planetary transmission gearing and as this drum carries clutch fingers 28 in the way of projections from the edge, one or other of these lingers must come in contact with the pin 13 and thereby form an eifective lock for the vehicle is powerless to move so long as these lingers are held from rotation with the drum and as the latter must rotate for driving the vehicle, said pin effects a lock Without necessarily stoppng the engine.

Ihat I claim is In a motor vehicle lock, a plate adapted to form a cover for the transmission mechanism of the vehicle and havingscrew holes and screws and a rigid lock casing on the outer side and a thickening on the inner side for a pin hole and communicating bolt slot, a lock and spring held bolt in said casing' and slot, a pin in said pin holo having bolt slots and a ianged head, a cover plate overlyingsaid screws and loosely inserted in a permanent recess in said plate and er;- tending under said head and a spring seated in a recess in said flanged head and engaging said plate.

Signed at l\f'[ontreal, Canada, this 14th day of March, 19241;.

LIONEL TREMBLAY. 

